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TL431 データシート(PDF) 4 Page - ON Semiconductor

部品番号 TL431
部品情報  Programmable Precision References
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メーカー  ONSEMI [ON Semiconductor]
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TL431 データシート(HTML) 4 Page - ON Semiconductor

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TL431, A, B Series, NCV431A, B
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ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted.)
Characteristic
Symbol
TL431AI / NCV431AI
TL431AC
TL431BI / TL431BV
NCV431BV
Unit
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Reference Input Voltage (Figure 1)
VKA = Vref, IK = 10 mA
TA = 25°C
TA = Tlow to Thigh
Vref
2.47
2.44
2.495
2.52
2.55
2.47
2.453
2.495
2.52
2.537
2.483
2.475
2.495
2.495
2.507
2.515
V
Reference Input Voltage Deviation Over
Temperature Range (Figure 1, Notes 4, 5)
VKA= Vref, IK = 10 mA
DVref
7.0
30
3.0
17
3.0
17
mV
Ratio of Change in Reference Input Voltage to
Change in Cathode to Anode Voltage
IK = 10 mA (Figure 2),
DVKA = 10 V to Vref
DVKA = 36 V to 10 V
DV
ref
DV
KA
−1.4
−1.0
−2.7
−2.0
−1.4
−1.0
−2.7
−2.0
−1.4
−1.0
−2.7
−2.0
mV/V
Reference Input Current (Figure 2)
IK = 10 mA, R1 = 10 k, R2 = ∞
TA = 25°C
TA = Tlow to Thigh (Note 4)
Iref
1.8
4.0
6.5
1.8
4.0
5.2
1.1
2.0
4.0
mA
Reference Input Current Deviation Over
Temperature Range (Figure 2, Note 4)
IK = 10 mA, R1 = 10 k, R2 = ∞
DIref
0.8
2.5
0.4
1.2
0.8
2.5
mA
Minimum Cathode Current For Regulation
VKA = Vref (Figure 1)
Imin
0.5
1.0
0.5
1.0
0.5
1.0
mA
Off−State Cathode Current (Figure 3)
VKA = 36 V, Vref = 0 V
Ioff
20
1000
20
1000
0.23
500
nA
Dynamic Impedance (Figure 1, Note 6)
VKA = Vref, DIK = 1.0 mA to 100 mA
f
≤ 1.0 kHz
|ZKA|
0.22
0.5
0.22
0.5
0.14
0.3
W
4. Tlow
= −40
°C for TL431AIP TL431AILP, TL431IP, TL431ILP, TL431BID, TL431BIP, TL431BILP, TL431BV, TL431AIDM, TL431IDM,
TL431BIDM, NCV431AIDMR2, NCV431AIDR2
=0
°C for TL431ACP, TL431ACLP, TL431CP, TL431CLP, TL431CD, TL431ACD, TL431BCD, TL431BCP, TL431BCLP, TL431CDM,
TL431ACDM, TL431BCDM
Thigh = +85°C for TL431AIP, TL431AILP, TL431IP, TL431ILP, TL431BID, TL431BIP, TL431BILP, TL431IDM, TL431AIDM, TL431BIDM
= +70
°C for TL431ACP, TL431ACLP, TL431CP, TL431ACD, TL431BCD, TL431BCP, TL431BCLP, TL431CDM, TL431ACDM,
TL431BCDM
= +125
°C TL431BV, NCV431AIDMR2, NCV431AIDR2, NCV431BVDMR2G
5. The deviation parameter
DVref is defined as the difference between the maximum and minimum values obtained over the full operating
ambient temperature range that applies.
DVref = Vref max
−Vref min
DTA = T2 − T1
T2
Ambient Temperature
T1
Vref min
Vref max
The average temperature coefficient of the reference input voltage,
aVref is defined as:
V
ref
ppm
_C
+
D V
ref
V
ref
@25
_C
X106
D T
A
+
D V
ref
x106
D T
A
(V
ref
@25
_C)
aVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature. (Refer to Figure 6.)
Example :
DV
ref +
8.0 mV and slope is positive,
V
ref
@25
_C + 2.495 V, DT
A +
70
_C
a V
ref +
0.008 x 106
70 (2.495)
+ 45.8 ppm _C
6. The dynamic impedance ZKA is defined as |ZKA| +
D V
KA
D I
K
When the device is programmed with two external resistors, R1 and R2, (refer
to Figure 2) the total dynamic impedance of the circuit is defined as: |Z
KA
|
[ |Z
KA
|
1
) R1
R2
7. NCV431AIDMR2, NCV431AIDR2, NCV431BVDMR2G Tlow = −40°C, Thigh = +125°C. Guaranteed by design. NCV prefix is for automotive
and other applications requiring site and change control.


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